a952d413dd5c0f70ccb6445223b10171afd15300d5e5ae34eda9d9fed8f96344

General

Target
2026-08-01_b40b4b7330d61a2c433b9766dbe348af_elex_wannacry.exe
Size 82KB
Sample260802-eks8cscg72
SHA256 a952d413dd5c0f70ccb6445223b10171afd15300d5e5ae34eda9d9fed8f96344
MD5 b40b4b7330d61a2c433b9766dbe348af
SHA1 753e94c49d0c324988eb35b6d82beeac4712de77
SHA512 040160de5100719723fd1c007f076f01397dd6cf8680712f6d712a8b18ba835beadef1ce025a40192c330c931dc5253b61617670f22b9adc5e12285634b8305d
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlL:eSABNx6vb4RoI4pyjHYLhal01UoPXn
TLSH
T17C83AD0BABAA58D9E220AC71152E777493FF946E3B149B938348ED4D9533CC1EC3614E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1928	hhbyl.exe

Executes dropped EXE 1 IoCs

pid	Process
1928	hhbyl.exe

Loads dropped DLL 1 IoCs

pid	Process
1600	rundll32.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2156	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3444	1600	WerFault.exe	88

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hhbyl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-01_b40b4b7330d61a2c433b9766dbe348af_elex_wannacry.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2156	cmd.exe
2996	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2996	PING.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3880	2026-08-01_b40b4b7330d61a2c433b9766dbe348af_elex_wannacry.exe
1928	hhbyl.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3880 wrote to memory of 2156	3880	2026-08-01_b40b4b7330d61a2c433b9766dbe348af_elex_wannacry.exe	84
PID 2156 wrote to memory of 2996	2156	cmd.exe	86
PID 2156 wrote to memory of 1928	2156	cmd.exe	87
PID 1928 wrote to memory of 1600	1928	hhbyl.exe	88

C:\Users\Admin\AppData\Local\Temp\2026-08-01_b40b4b7330d61a2c433b9766dbe348af_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-01_b40b4b7330d61a2c433b9766dbe348af_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3880
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\hhbyl.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-01_b40b4b7330d61a2c433b9766dbe348af_elex_wannacry.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2156
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2996
- - \??\c:\hhbyl.exe
    c:\hhbyl.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-01_b40b4b7330d61a2c433b9766dbe348af_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1928
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\ricadkum\wyjutkd.dll",DoVirusScan c:\hhbyl.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:1600
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1600 -s 560
        5⤵
        Program crash
        
        PID:3444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 1600 -ip 1600
1⤵
PID:3724

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

1

T1018

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

hhbyl.exe

Path C:\hhbyl.exe
Size 82KB
SHA256 b2971d8bc309bd731b63152ecc50127178d860a05dc1ddb76c945f02c1f1d15c
MD5 894fc359e51fb1cb0702da34caefee2f
SHA1 a0e27e49ee7e07aae68fc01a923342da2fba64fa
SHA512 aeab39408627cb2483d60a897460ecb7e052030880834b02c9ec2d17cdc077251064e7c5aecf004572c0a28ae9a4932ada109c1fe8a6e472f08c02c0dc2c99e5
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlq:eSABNx6vb4RoI4pyjHYLhal01UoPXm
TLSH
T1FF83AD0BABAA58D9E2206C71152E777493EF946E3B249B938348FD4D9533CC1EC3614E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

wyjutkd.dll

Path \??\c:\ricadkum\wyjutkd.dll
Size 50KB
SHA256 7604a0d3e695ff2f47b2961a860aa77e41952df48c132c18ac8d84e6ed3ee8eb
MD5 18cc91cc0c4c41e39a2c5310e760f0ef
SHA1 aaacc94db8d8a37e5d34878aa259d3274a5ff2a7
SHA512 8abba5220a7216288d0d2c683a5d01b796b1179464a2432eda991004348223c822c54ab39fd19302ff01974ec8d026e98280e9f1bdb67178126d75a974ecc7e7
SSDEEP 768:Z+arYIR3u5v4bGwCl56LNQQe5JBtGf1oTYtx/qQvo9:ZPrG57TzDxJS6Etx/ZvO
TLSH
T1AB33E178E1F4B8F6E46EAB345D82146DB1C16BD34D3080BA079224AF6C37E578B52731
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1600-10-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/1928-7-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3880-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3880-2-0x0000000000400000-0x0000000000417000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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